Scientists have created a fluid with negative mass – but what does it tell us?

[OddTrader]

For an object with negative mass, Isaac Newton’s second law of motion, in which a force is equal to the mass of an object multiplied by its acceleration (F=ma) would be experienced in reverse.

Scientists have created a fluid with negative mass – but what does it tell us?

The fluid, which defies everyday laws of motion, is a rare achievement and provides a platform to study an otherwise hypothetical form of matter

20 April 2017
https://www.theguardian.com/science...d-with-negative-mass-but-what-does-it-tell-us

Scientists have created a fluid that exhibits the bizarre property of “negative mass” in an experiment that appears to defy the everyday laws of motion.

Push an object and Newton’s laws (and common experience) dictate that it will accelerate in the direction in which it was shoved.

“That’s what most things that we’re used to do,” said Matthew Forbes, a physicist at Washington State University and co-author of the paper, which shows that normal intuitions do not always apply to physics experiments. “With negative mass, if you push something, it accelerates toward you.”

 

[Overnight]

For an object with negative mass, Isaac Newton’s second law of motion, in which a force is equal to the mass of an object multiplied by its acceleration (F=ma) would be experienced in reverse.

"No fundamental particles with negative mass have ever been discovered, meaning that there have never been any experimental insights into how they might behave – if, indeed, they exist. The latest study provides a new platform to study this hypothetical form of matter, by showing that under certain precise conditions, normal particles can be made to behave as though they had negative mass."

I had a hypothetical dog once. It buried a hypothetical bone. Later, it dug up the bone and it changed the dynamic of my universe... Especially when a rabid rabbit came into the yard and started nibbling on the hypothetical bone an hour later.

My dog then ate the rabbit which became hypothetical after it ate the hypothetical rabbit that had nibbled on the hypothetical bone. Earlier. Theoretically.

 

[Cuddles]

"No fundamental particles with negative mass have ever been discovered, meaning that there have never been any experimental insights into how they might behave – if, indeed, they exist. The latest study provides a new platform to study this hypothetical form of matter, by showing that under certain precise conditions, normal particles can be made to behave as though they had negative mass."

I had a hypothetical dog once. It buried a hypothetical bone. Later, it dug up the bone and it changed the dynamic of my universe... Especially when a rabid rabbit came into the yard and started nibbling on the hypothetical bone an hour later.

My dog then ate the rabbit which became hypothetical after it ate the hypothetical rabbit that had nibbled on the hypothetical bone. Earlier. Theoretically.

The Bose condensate was once hypothetical too, until it wasn't.

 

[mlawson71]

I wonder what the practical application would be. It should have some, someone will come up with it.